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CHEMWEST ANALYTICAL LABORATORIES <br /> BENZENE, TOLUENE, ETHYL BENZENE, XYLENES <br /> CW:CALUFT <br /> Quality Control <br /> ' Client ID: LQCS GC-5 S507 CHEMWEST ID: 9796-QC1 <br /> Date Analyzed: 07/10/92 Matrix : Soil <br /> Spike <br /> Com oundConc' Recovery Recovery <br /> ' (m9/K9) -`- 9796-MBS 9796-MBSD RPD <br /> --------------- __ __ _ <br /> Benzene . 50 -g2�---------8$$Y-------4g-_ <br /> 0 <br /> Toluene 0. 50 92% 90% 2% <br /> Ethylbenzene 0. 50 90% 84% 7% <br /> ' p-Xylene 0 . 25 94% 88% 7% <br /> m-Xylene 0 . 25 96% 94% 2g <br /> o-Xylene 0. 50 90% 86% 5% <br /> ' Total-Xylenes 1 - 0 <br /> ----------------------------- <br /> Spike % % <br /> Conc. Recovery Recovery <br /> Surrogate (mg/Kg) 9796-MSS 9796-MBSD <br /> ----------------------------------------------- <br /> Bromofluorobenzene ---------- <br /> CALUFT: See Narrative - �_--- <br /> ' Approved by: Date Reported: <br /> 07/28/92 REV 5: 1. 90 <br /> COMPUCI'EM WESTERN DIVISION <br />